package org.wkg.lesson04;

public class Demo_402 {

    public static void main(String[] args) throws InterruptedException {
        Counter402 counter = new Counter402();

        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                counter.increase();
            }
        });

        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                counter.increase();
            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();

        System.out.println("count : " + counter.count);
    }


}

class Counter402 {
    public int count = 0;

    public void increase() {
        synchronized (this) {
            count++;
        }
    }
}


